They bore a resemblance to gnomes, but had a skin tone that ranged from dark brown and dull grey skin, to pale yellow. Their skin also had a toughness comparable to that of granite. Their eyes were large, lacked pupils, and reflected light like an owl or cat. Their arms and legs were thin and gangly, ending in abnormally large and powerful hands. Their hair tended grow either wiry or as thick manes, the color of wet clay.
Pech were typically known to be stoic and reserved.
When pechs gathered together, they could mould stone as if it were clay, conjure walls of stone out of thin air, as well as petrify and un-petrify living creatures. Though some pechs were known to be powerful enough to perform the first two things on their own, as well as cast the spell stone tell.
Outside of being able to petrify or un-petrify creatures, pechs themselves were entirely immune to the condition.
On one of their adventures, the ranger Drizzt Do'Urden and Belwar Dissengulp encountered a pech who had been polymorphed by an evil wizard into a hook horror. They named him Clacker and together ventured through the Underdark.
Their affinity with stone and natural aversion to sunlight made subterranean habitats ideal for them.
Pech often competed for raw materials in their underground habitats with dao, tomb tappers, and various dwarven races. They traded what they mined with other creatures in return for food or services. They were also known to trade any cockatrices they caught with the svirfneblin.
When not in conflict or trade with another creature, pech generally kept to themselves. Those that lived in the Elemental Plane of Earth sometimes engaged in inter-tribal warfare with the aid of sandmen and earth weirds.
- Doug Stewart (June 1993). Monstrous Manual. (TSR, Inc), p. 102. ISBN 1-5607-6619-0.
- Gary Gygax (August 1983). Monster Manual II 1st edition. (TSR, Inc), p. 99. ISBN 0-88038-031-4.
- Frank Mentzer (January 1985). “Ay pronunseeAYshun gyd”. In Kim Mohan ed. Dragon #93 (TSR, Inc.), p. 28.
- Richard Baker and Robert J. Schwalb (February, 2012). Heroes of the Elemental Chaos. (Wizards of the Coast), p. 150. ISBN 0786959819.
- Douglas Niles (1986). Dungeoneer's Survival Guide. (TSR, Inc.), p. 69. ISBN 0-88038-272-4.
- Warning: edition not specified for Exile
- Ed Greenwood (March 1985). “The Ecology of the Cockatrice”. In Kim Mohan ed. Dragon #95 (TSR, Inc.), p. 24.
- Monte Cook, ed. (1998). Monstrous Compendium Planescape Appendix III. Edited by Michele Carter and Ray Vallese. (TSR, Inc.), p. 8. ISBN 0-7869-0751-7.
- David "Zeb" Cook (1994). Planescape Campaign Setting, A DM Guide to the Planes. Edited by David Wise. (TSR, Inc), p. 36. ISBN 978-1560768340.
- Monte Cook (1996). The Planewalker's Handbook. Edited by Michele Carter. (TSR), p. 29. ISBN 978-0786904600.
- Rashemen Encounters Charts included in Anthony Pryor (June 1995). Spellbound. Edited by Michele Carter, Doug Stewart. (TSR, Inc.). ISBN 978-0786901395.
- Eric L. Boyd (1999). Drizzt Do'Urden's Guide to the Underdark. (TSR, Inc), p. 31. ISBN 0-7869-1509-9.
- Monte Cook and William W. Connors (December 7, 1998). The Inner Planes. Edited by Michele Carter and Ray Vallese. (TSR, Inc.), p. 36. ISBN 0-7869-0736-3.
- Monte Cook, ed. (1998). Monstrous Compendium Planescape Appendix III. Edited by Michele Carter and Ray Vallese. (TSR, Inc.), p. 9. ISBN 0-7869-0751-7.
- Monte Cook and William W. Connors (December 7, 1998). The Inner Planes. Edited by Michele Carter and Ray Vallese. (TSR, Inc.), p. 35. ISBN 0-7869-0736-3.